Re: Found Emacs menubar focus bug

Re: Found Emacs menubar focus bug

[D. Goel]

This problem appears here too.  Hence reporting as bug. 

preitsma@my-Deja.com (Preitsma) writes in comp.emacs:

> I just noticed a repeatable bug in Emacs:
> 
> Problem:  Emacs stops refreshing
> 
> Symptoms:
> 1)  Keypresses are applied (including commands like save; quit still
> quits) but not displayed.
> 2)  Emacs will not refresh if a redraw is needed (like switching away
> from and back to the virtual desktop).
> 3)  Next click of mouse is captured by Emacs (see next).
> 
> Quick fix:  clicking the mouse anywhere in the affected virtual
> desktop will unfreeze Emacs and show the changes that have occurred;
> the click will have no other effect, regardless of what was under the
> mouse.
> 
> How to get:  click on the menu bar of an Emacs window anywhere to the
> right of "Help" (the last item).  Happens every time in my version.
> 
> Version:  GNU Emacs 21.2.1 (i386-debian-linux-gnu, X toolkit, Xaw3d
> scroll bars) of 2002-03-22 on raven, modified by Debian
> 
> Just thought someone might want to know.  :)
> 
> -P


In GNU Emacs 21.2.1 (i386-debian-linux-gnu, X toolkit, Xaw3d scroll bars)
 of 2002-03-22 on raven, modified by Debian
configured using `configure  i386-debian-linux-gnu --prefix=/usr --sharedstatedir=/var/lib --libexecdir=/usr/lib --localstatedir=/var/lib --infodir=/usr/share/info --mandir=/usr/share/man --with-pop=yes --with-x=yes --with-x-toolkit=athena --without-gif'
Important settings:
  value of $LC_ALL: nil
  value of $LC_COLLATE: nil
  value of $LC_CTYPE: 
  value of $LC_MESSAGES: nil
  value of $LC_MONETARY: nil
  value of $LC_NUMERIC: nil
  value of $LC_TIME: nil
  value of $LANG: C
  locale-coding-system: nil
  default-enable-multibyte-characters: t

Please describe exactly what actions triggered the bug
and the precise symptoms of the bug:




Recent input:
r e SPC t o o SPC : ) <return> <backspace> <backspace> 
<backspace> <backspace> . SPC SPC S h o u l d SPC b 
e SPC r e p o r t e d SPC : ) <return> <return> C-x 
k <return> y e s <return> F <up> <up> <up> <up> <up> 
<up> <up> <up> <up> <up> C-c C-t C-a <C-right> <C-right> 
<C-left> C-k e m a c s - o r <backspace> <backspace> 
b u SPC <backspace> <backspace> <backspace> <backspace> 
<backspace> <backspace> <backspace> <backspace> <backspace> 
C-SPC M-x r e p o r t - e m <tab> <return>

Recent messages:
End of message [3 times]
Parsing /home/deego/.mailrc-emacs... done
Loading bbdbrc...done
Mark set [3 times]
Auto-saving...done
Mark set [3 times]
completion for "emacs-bu" unfound.
BBDBRC: No completions found
Mark set
Loading emacsbug...done

Re: Found Emacs menubar focus bug

[Richard Stallman]

    > Problem:  Emacs stops refreshing
    > 
    > Symptoms:
    > 1)  Keypresses are applied (including commands like save; quit still
    > quits) but not displayed.
    > 2)  Emacs will not refresh if a redraw is needed (like switching away
    > from and back to the virtual desktop).
    > 3)  Next click of mouse is captured by Emacs (see next).

    > How to get:  click on the menu bar of an Emacs window anywhere to the
    > right of "Help" (the last item).  Happens every time in my version.

I just tried this, and I think it is a feature of the menu bar.
This click seems to activate the menu bar, so that dragging the mouse
across it brings the menus up.

Another click on the menu bar area deactivates it, it seems.

Whether this feature is really a good idea, I don't know.
I also don't know how to turn it off--but an X toolkit wizard
might know.

Re: Found Emacs menubar focus bug

[Ami Fischman]

Richard Stallman <rms@gnu.org> writes:

[...]

> I just tried this, and I think it is a feature of the menu bar.
> This click seems to activate the menu bar, so that dragging the mouse
> across it brings the menus up.

Agreed that it is a feature, but there is a bug in the feature, that causes
emacs to segfault if you hit the left-arrow key right after clicking to the
right of the menus in the menubar.  If one hits the right-arrow, the File
menu is selected, and thereafter left/right wrap around from File to Help
(and back), but if the first key after the mouse-click is the left arrow,
emacs will crash and burn.  This is with M-x emacs-version of:
GNU Emacs 21.2.50.5 (i686-pc-linux-gnu, X toolkit, Xaw3d scroll bars) of 2002-04-23 on meat

Cheers,
-- 
  Ami Fischman
  usenet@fischman.org

Re: Found Emacs menubar focus bug

[arthur.chereau]

I experience this too, with Emacs 21.2 compiled with Lesstif.
The difference is that the keypresses are displayed, but the cursor is not diplayed
until you move the mouse outside the emacs frame and then move it inside.

> I just noticed a repeatable bug in Emacs:
>
> Problem:  Emacs stops refreshing
>
> Symptoms:
> 1)  Keypresses are applied (including commands like save; quit still
> quits) but not displayed.
> 2)  Emacs will not refresh if a redraw is needed (like switching away
> from and back to the virtual desktop).
> 3)  Next click of mouse is captured by Emacs (see next).
>
> Quick fix:  clicking the mouse anywhere in the affected virtual
> desktop will unfreeze Emacs and show the changes that have occurred;
> the click will have no other effect, regardless of what was under the
> mouse.
>
> How to get:  click on the menu bar of an Emacs window anywhere to the
> right of "Help" (the last item).  Happens every time in my version.
>
> Version:  GNU Emacs 21.2.1 (i386-debian-linux-gnu, X toolkit, Xaw3d
> scroll bars) of 2002-03-22 on raven, modified by Debian
>
> Just thought someone might want to know.  :)
>
> -P
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